Without Warning

Without Warning is a 1980 science fiction/horror film starring Jack Palance, Martin Landau and David Caruso. Cameron Mitchell is in this, too, and I have a soft spot in my heart for him because I loved his character on The High Chaparral. It also has Larry Storch (from F Troop).

Without Warning - FULL movie (1980) by cosmo2161

DVD Talk says,

Without Warning may not be a lost masterpiece but it is a really entertaining low budget horror picture that makes the most of its effects set pieces and a few notable cast members. If it takes a little while to get going, the last half makes up for that

HorrorNews.net calls it "a decent film worth really checking out". Moria says that it's "the top-billed Jack Palance and especially Martin Landau who give Without Warning its watchable life".